In some cases, we need to restore big databases using phpmyadmin. In that cases, we need to increase the upload limit in phpmyadmin to accomplish this.
Change the values (to the required value) “upload_max_filesize” & “post_max_size” in the file “/usr/local/psa/admin/conf/php.ini”
And restart the apache, here plesk service providing the apache for phpmyadmin, so restart psa.
Now you can restore bigger databases from phpmyadmin